Murata adds 90A, PMBus™ compliant PoLs for FPGA & processor power

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MURATA further expands its OKD series of Digital PoL DC-DC converters by launching the 90 A/162 W OKDx-T/90 series from Murata Power Solutions. This is the highest current-rated product in the OKD series, which already provides solutions from 6 A to 60 A. The OKDx-T/90 series is ideally suited for FPGA & processor applications. The module is specified to operate over a Vin range of 7.5 V to 14 V and provides a user-adjustable Vout in the range of 0.6 V to 1.8 Vdc with industry leading efficiency of 94%. The OKDx-T/90 is available in three different package configurations:

  1. SIP measuring just 2.0 x 0.37 x 0.75 in (50.8 x 9.51 x19.05 mm),
  2. Horizontal mounting TH (Through-Hole), and
  3. SMT versions measuring 2.0 x 0.75 x 0.39 in (50.8 x 19.05 x 10 mm).

The OKDx-T/90 is ideal for space-constrained embedded applications where performance is critical to the application. Critical performance parameters are fully accessible through the PMBus™ via the Murata Power Design GUI software. The OKDx-T/90-W12 series converters are delivered with a default firmware configuration suitable for a wide operating range in terms of input voltage, output voltage, and loading conditions. The OKDx-T/90 operates over a Vin range from 7.5 V to 14 V; Vout can be adjusted from 0.6 V to 1.8 V, with a typical efficiency of 94% with 12 Vin, at 1.8 V out and 50% load.

The converter’s proprietary digital control power management functions include a range of advanced performance-enhancing features. Its non-linear transient response greatly improves the dynamic response time, reducing Vout deviation due to large load changes; phase spreading reduces input capacitor requirements and efficiency losses. The synchronization feature eliminates beat frequency reflection, resulting in less EMI filtering, and digital current sharing ensures near 100% current sharing accuracy with up to four modules operating in parallel. The converters provide Dynamic Loop Compensation, where the feedback loop parameters are automatically calculated and configured depending on the unique application-specific operating conditions. Additional standard features include output short circuit, over current, over voltage, over temperature, and input under voltage protection. Voltage margining, tracking, power good, remote sense, and remote on/off are also features commonly used in advanced power architectures.

All of the OKDx-T/90-W12’s standard and advanced features can be configured via the Murata Power Designer software (GUI), which includes a high-precision simulation tool.

The converters are suitable for any application requiring high current processor power, particularly in areas such as networking, computing/servers, telecom, powering FPGAs, CPUs, programmable logic, mixed voltage systems, advanced computing, and all distributed power applications.


  • Input voltage range of 7.5 to 14Vdc
  • 0.6 V–1.8 V output voltage range
  • High efficiency, typ. 94.3% at 12Vin, 1.8Vout half-load
  • Configuration & Monitoring via PMBus™
  • Synchronization & phase spreading
  • Current sharing, Voltage Tracking & Voltage margining
  • MTBF 14.95 Mhrs
  • Non-Linear Response for reduction of decoupling capacitor
  • Remote On/Off control & Power Good
  • Output short-circuit, output over voltage, & over temperature protection
  • Certified to UL/IEC 60950-1

MURATA in Brief

Murata Manufacturing Co., Ltd. is a worldwide leader in the design, manufacture and sale of ceramic-based passive electronic components & solutions, communication modules and power supply modules. Murata is committed to the development of advanced electronic materials and leading edge, multi-functional, high-density modules. The company has employees and manufacturing facilities throughout the world. For more information, visit Murata’s website at